CN117279112A - Interference suppression method and device, storage medium and electronic device - Google Patents

Interference suppression method and device, storage medium and electronic device Download PDF

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Publication number
CN117279112A
CN117279112A CN202210657159.5A CN202210657159A CN117279112A CN 117279112 A CN117279112 A CN 117279112A CN 202210657159 A CN202210657159 A CN 202210657159A CN 117279112 A CN117279112 A CN 117279112A
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China
Prior art keywords
base station
terminal
angle
time slot
interference
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CN202210657159.5A
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Chinese (zh)
Inventor
刘彩芳
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ZTE Corp
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ZTE Corp
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Priority to CN202210657159.5A priority Critical patent/CN117279112A/en
Priority to PCT/CN2023/072934 priority patent/WO2023236545A1/en
Publication of CN117279112A publication Critical patent/CN117279112A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/04—Scheduled or contention-free access

Abstract

The invention provides an interference suppression method and device, a storage medium and an electronic device, wherein the method comprises the following steps: calculating the angle range of a first base station to a shaped wave beam of a first terminal, and calculating interference parameters between the first base station and a second base station; judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter; and if the first terminal is a target terminal, the first base station prohibits scheduling of the first terminal. The invention solves the technical problem that the related technology cannot completely inhibit interference by adopting network deployment and planning, reduces the interference of the first base station to the second base station to the greatest extent, effectively reduces the cell air interface resource loss rate of the first base station, and reduces the downlink flow loss from the first base station to the first terminal.

Description

Interference suppression method and device, storage medium and electronic device
Technical Field
The present invention relates to the field of communications, and in particular, to an interference suppression method and apparatus, a storage medium, and an electronic apparatus.
Background
In the related art, there are two main solutions for aviation communication systems, one is a satellite communication scheme and one is a ground-air broadband communication scheme. The satellite communication scheme has wide coverage, can cover land and sea, but has high deployment and operation cost and prolonged network time; compared with a satellite communication scheme, the Air To Group (ATG) has the advantages of low cost, high speed, small time delay, quick technical iteration upgrade and the like. The ATG communication system erects ground base stations along a flight path or a specific airspace, and an ATG terminal is connected with the Internet through a ground-air communication link; the base station is erected on the airlines, and the interference of the airlines to the ground public network base station is needed to be considered, so that the interference of the airlines to the ground public network base station is very important to be solved.
In the related art ATG system, the maximum coverage of an ATG base station can reach hundreds of kilometers, and a narrow beam mode is adopted to point to an ATG terminal; when the downlink time slot of the ATG base station overlaps with the uplink time slot of the public network base station, the ATG base station can generate strong interference on the public network base station receiving signal on the same frequency domain resource. For this type of interference, a common interference suppression method is implemented by network deployment and planning, i.e. suppressing interference by maintaining the inter-base station distance. However, due to the ultra-far coverage of the ATG base station, when the ATG terminal flies at a far point in the cell, the interference of the ATG base station to surrounding public network base stations cannot be completely suppressed by adopting such a method.
In view of the above problems in the related art, an effective solution has not been found.
Disclosure of Invention
The embodiment of the invention provides an interference suppression method and device, a storage medium and an electronic device, which are used for at least solving the problems in the related art.
According to an embodiment of the present invention, there is provided an interference suppression method including: calculating the angle range of a first base station to a shaped wave beam of a first terminal, and calculating interference parameters between the first base station and a second base station; judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter; and if the first terminal is the target terminal, the first base station prohibits scheduling of the first terminal.
Optionally, calculating the angular range of the beam formed by the first base station to the first terminal includes: acquiring terminal position information of a first terminal; calculating a beam forming angle of the first base station for the first terminal by adopting the terminal position information; and calculating the angle range of the beam of the first base station aiming at the first terminal according to the angle of the beam.
Optionally, the forming beam angle includes a horizontal angle of arrival HDOA and a vertical angle of arrival VDOA, and calculating, according to the forming beam angle, an angle range of the forming beam of the first base station for the first terminal includes: acquiring a horizontal angle width beamwidth H and a vertical angle width beamwidth V of a shaped beam of the first base station; the angular range of the shaped beam of the first base station for the first terminal is calculated by adopting the following formula: a beam angle interval range of horizontal dimension= [ HDOA-beamWidthH/2, hdoa+beamwidthh/2], a beam angle interval range of vertical dimension= [ VDOA-beamWidthV/2, vdoa+beamwidthv/2]; wherein the angular range of the shaped beam comprises a horizontal angular range and a vertical angular range of the shaped beam.
Optionally, calculating the interference parameter between the first base station and the second base station includes: generating an interference time slot bitmap between the first base station and the second base station, and calculating a connection angle between the first base station and the second base station; and determining the interference time slot bitmap and the connection line angle as interference parameters between the first base station and the second base station.
Optionally, calculating the connection angle between the first base station and the second base station includes: acquiring first position information of the first base station and inquiring second position information of the second base station; and calculating a connection angle between the first base station and the second base station according to the first position information and the second position information, wherein the connection angle comprises a horizontal angle and a vertical angle.
Optionally, generating the interference time slot bitmap between the first base station and the second base station includes: acquiring a first frame structure of the first base station, and inquiring a second frame structure of the second base station, wherein the first frame structure comprises a plurality of time slots, the second frame structure comprises a plurality of time slots, and the time slot length of the first frame structure is the same as the time slot length of the second frame structure; analyzing the first frame structure and the second frame structure, and judging whether the downlink time slot of the first frame structure is overlapped with the uplink time slot of the second frame structure; and if the downlink time slot of the first frame structure is not overlapped with the uplink time slot of the second frame structure, configuring a second flag bit at the corresponding time slot position of the initial time slot bitmap to obtain an interference time slot bitmap between the first base station and the second base station.
Optionally, the determining whether the first terminal is the target terminal according to the angle range of the shaped beam and the interference parameter includes: judging whether the connection angle is in the angle range of the shaped wave beam or not, and judging whether the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first zone bit, wherein the first zone bit is used for representing that the downlink time slot of the first base station is overlapped with the uplink time slot of the second base station; and if the connection angle is within the angle range of the shaped wave beam and the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first zone bit, determining that the first terminal is a target terminal.
According to another embodiment of the present invention, there is provided an interference suppression apparatus including: the computing module is used for computing the angle range of the first base station to the shaped wave beam of the first terminal and computing the interference parameter between the first base station and the second base station; the judging module is used for judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter; and the control module is used for prohibiting the first base station from scheduling the first terminal if the first terminal is a target terminal.
Optionally, the computing module includes: an acquisition unit, configured to acquire terminal position information of a first terminal; a first calculating unit, configured to calculate a beam forming angle of the first base station for the first terminal using the terminal position information; and the second calculation unit is used for calculating the angle range of the beam of the first base station for the first terminal according to the angle of the beam.
Optionally, the shaped beam angle includes a horizontal angle of arrival HDOA and a vertical angle of arrival VDOA, and the second calculation unit includes: an obtaining subunit, configured to obtain a horizontal angle width beamwidth h and a vertical angle width beamwidth v of a beam formed by the first base station; a calculating subunit, configured to calculate an angle range of the shaped beam of the first base station for the first terminal by using the following formula: a beam angle interval range of horizontal dimension= [ HDOA-beamWidthH/2, hdoa+beamwidthh/2], a beam angle interval range of vertical dimension= [ VDOA-beamWidthV/2, vdoa+beamwidthv/2]; wherein the angular range of the shaped beam comprises a horizontal angular range and the vertical angular range of the shaped beam.
Optionally, the computing module includes: the processing unit is used for generating an interference time slot bitmap between the first base station and the second base station and calculating a connection angle between the first base station and the second base station; and the determining unit is used for determining the interference time slot bitmap and the connection line angle as interference parameters between the first base station and the second base station.
Optionally, the processing unit includes: an obtaining subunit, configured to obtain first location information of the first base station, and query second location information of the second base station; and the calculating subunit is used for calculating a connecting line angle between the first base station and the second base station according to the first position information and the second position information, wherein the connecting line angle comprises a horizontal angle and a vertical angle.
Optionally, the processing unit includes: a processing subunit, configured to obtain a first frame structure of the first base station, and query a second frame structure of the second base station, where the first frame structure includes a plurality of time slots, the second frame structure includes a plurality of time slots, and a time slot length of the first frame structure is the same as a time slot length of the second frame structure; a judging subunit, configured to parse the first frame structure and the second frame structure, and judge whether a downlink timeslot of the first frame structure and an uplink timeslot of the second frame structure overlap; a configuration subunit, configured to, for each time slot position, configure a first flag bit at a corresponding time slot position of an initial time slot bitmap if a downlink time slot of the first frame structure overlaps with an uplink time slot of the second frame structure, and configure a second flag bit at a corresponding time slot position of the initial time slot bitmap if the downlink time slot of the first frame structure does not overlap with the uplink time slot of the second frame structure, so as to obtain an interference time slot bitmap between the first base station and the second base station.
Optionally, the interference parameter includes an interference time slot bitmap between the first base station and the second base station and a connection angle between the first base station and the second base station, and the judging module includes: the judging unit is used for judging whether the connection angle is in the angle range of the shaped wave beam or not, and judging whether the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first flag bit or not, wherein the first flag bit is used for representing that the downlink time slot of the first base station is overlapped with the uplink time slot of the second base station; and the determining unit is used for determining that the first terminal is a target terminal if the connection angle is in the angle range of the shaped wave beam and the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first flag bit.
According to a further embodiment of the invention, there is also provided a storage medium having stored therein a computer program, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.
According to a further embodiment of the invention, there is also provided an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.
According to the invention, the angle range of the first base station to the shaped beam of the first terminal is calculated, the interference parameter between the first base station and the second base station is calculated, whether the first terminal is a target terminal is judged according to the angle range of the shaped beam and the interference parameter, if the first terminal is the target terminal, the first base station prohibits scheduling of the first terminal, so that the interference to the second base station caused when the first base station schedules the first terminal can be avoided, the technical problem that the interference cannot be completely restrained by adopting network deployment and planning in the related technology is solved, the interference of the first base station to the second base station is reduced to the greatest extent, the cell air interface resource loss rate of the first base station is effectively reduced, and the downlink flow loss from the first base station to the first terminal is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a block diagram of a hardware architecture of a base station for interference suppression according to an embodiment of the present invention;
fig. 2 is a flow chart of an interference suppression method according to an embodiment of the invention;
FIG. 3 is a block diagram of a network system to which embodiments of the present invention are applied;
FIG. 4 is a schematic diagram of the determination of an interference slot in an embodiment of the present invention;
FIG. 5 is a schematic diagram of calculating a horizontal angle between a first base station and a second base station according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of calculating a vertical angle between a first base station and a second base station according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a public network base station in an ATG base station beamforming range in an embodiment of the present invention;
fig. 8 is a schematic diagram of a public network base station not in the beamforming range of an ATG base station in an embodiment of the present invention;
FIG. 9 is a complete flow chart of interference suppression in an embodiment of the present invention;
fig. 10 is a block diagram of a structure of an interference suppressing apparatus according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
Example 1
The method embodiment provided in the first embodiment of the present application may be performed in a base station, a server, a base station controller, or a similar control device. Taking the operation on a base station as an example, fig. 1 is a block diagram of a hardware structure of a base station for interference suppression according to an embodiment of the present invention. As shown in fig. 1, a base station may include one or more processors 102 (only one is shown in fig. 1) (the processor 102 may include, but is not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA) and a memory 104 for storing data, and optionally, a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and is not intended to limit the structure of the base station described above. For example, the base station may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.
The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to the interference suppression method in the embodiment of the present invention, and the processor 102 executes the computer program stored in the memory 104, thereby performing various functional applications and data processing, that is, implementing the method described above. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located with respect to the processor 102, which may be connected to the base station via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the base station. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, simply referred to as NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is configured to communicate with the internet wirelessly.
In this embodiment, there is provided an interference suppression method, and fig. 2 is a flowchart of an interference suppression method according to an embodiment of the present invention, as shown in fig. 2, where the flowchart includes the following steps:
step S202, calculating the angle range of the first base station to the shaped beam of the first terminal, and calculating the interference parameter between the first base station and the second base station;
optionally, the first base station is an ATG base station, configured to perform ground-air communication with a first terminal in the air, and the second base station is a public network base station, that is, a ground base station, and is configured to perform communication with a second terminal on the ground.
Fig. 3 is a diagram of a network system structure to which an embodiment of the present invention is applied, including an ATG system including an ATG base station and an ATG terminal, and a ground communication system including a public network base station and a public network terminal (not shown), the entire network system including: the system comprises an ATG base station, a public network base station, an ATG terminal and the like, wherein the ATG base station is connected with an ATG position server and a ground ATG core network, the ATG terminal is carried on an aircraft, and an airborne ATG antenna is arranged on the aircraft.
Optionally, the interference parameter of this embodiment is used to characterize the radio resource occupation condition (such as the overlapping state of the time slot resources, the overlapping state of the frequency resources, etc.) and the relative positional relationship of the first base station and the second base station, such as the interference time slot bitmap between the first base station and the second base station and the connection angle between the first base station and the second base station.
Step S204, judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter;
the target terminal in this embodiment refers to an ATG terminal that causes interference to a ground communication system by an ATG base station when scheduled by the ATG base station, or a ground terminal that causes interference to a second type base station of the ground communication system by a first type base station of the ground communication system when scheduled by the first type base station of the ground communication system, where the first terminal is the ATG terminal, and the target terminal refers to a terminal that causes interference to the ground communication system (such as a public network base station) by the ATG base station when scheduled by the ATG base station. In other cases, in the case that the first terminal is a ground communication terminal, the target terminal refers to a terminal that causes interference to the second type of public network base station by the first type of public network base station when the first terminal is scheduled by the first type of public network base station, where both the first base station and the second base station are base stations adopting DOA shaping in the ground communication system. The following embodiments will be described taking the first terminal as an example of an ATG terminal.
In step S206, if the first terminal is the target terminal, the first base station prohibits scheduling of the first terminal.
In another aspect, when the first terminal is not the target terminal, the first base station is controlled to continue scheduling the first terminal. Optionally, before calculating the angular range of the beam formed by the first base station to the first terminal, the method further includes: and determining a first terminal list which is currently scheduled by the first base station, and selecting the first terminal from the first terminal list.
Through the steps, the angle range of the first base station to the formed beam of the first terminal is calculated, the interference parameter between the first base station and the second base station is calculated, whether the first terminal is a target terminal is judged according to the angle range of the formed beam and the interference parameter, if the first terminal is the target terminal, the first base station prohibits scheduling of the first terminal, interference to the second base station caused when the first base station schedules the first terminal can be avoided, the technical problem that the interference cannot be completely restrained by adopting network deployment and planning in the related technology is solved, the interference of the first base station to the second base station is reduced to the greatest extent, the cell air interface resource loss rate of the first base station is effectively reduced, and the downlink flow loss from the first base station to the first terminal is reduced.
Alternatively, the main body of execution of the above steps may be a base station, such as an ATG base station, a ground base station, a base station controller, a server, etc., but is not limited thereto.
In this embodiment, calculating the angular range of the beam formed by the first base station to the first terminal includes:
s11, acquiring terminal position information of a first terminal;
when the first terminal establishes communication with the first base station or requests to establish communication, the terminal reports in real time or the base station acquires the position of the first terminal, for example, when the ATG base station performs downlink scheduling, the terminal reports GNSS (Global Navigation Satellite System ) information in real time.
S12, calculating a beam forming angle of the first base station for the first terminal by adopting the terminal position information;
in this embodiment, the ATG system includes an ATG base station and an ATG terminal, where the ATG base station (corresponding to the first base station) is a special station built on the ground, and may use a narrow beam for shaping, and has a wide coverage area, and the ATG terminal is a terminal device carried on an air vehicle such as an aircraft, where the ATG terminal (corresponding to the first terminal) reports GNSS position information in real time, and the ATG base station calculates a DOA (direction of arrival, a reachable angle) angle according to the GNSS information of the terminal, and uses the DOA shaping under the base station, where the shaping beam angle includes an HDOA (Horizontal angle of DOA, a horizontal reachable angle) and a VDOA (vertical reachable angle).
S13, calculating the angle range of the beam forming of the first base station for the first terminal according to the angle of the beam forming.
In one implementation of this embodiment, the forming beam angle includes a horizontal angle of arrival HDOA and a vertical angle of arrival VDOA, and calculating, according to the forming beam angle, an angle range of the forming beam of the first base station for the first terminal includes: acquiring a horizontal angle width beamwidth H and a vertical angle width beamwidth V of a shaped beam of a first base station; the angular range of the first base station for the shaped beam of the first terminal is calculated using the following formula: a beam angle interval range of horizontal dimension= [ HDOA-beamWidthH/2, hdoa+beamwidthh/2], a beam angle interval range of vertical dimension= [ VDOA-beamWidthV/2, vdoa+beamwidthv/2]; wherein the angular range of the shaped beam comprises a horizontal angular range and a vertical angular range of the shaped beam.
After calculating the DOA angles (HDOA and VDOA) of the ATG base station to the first terminal by using the GNSS information reported in real time by the terminal in step S12, calculating the beam angle range of the ATG base station when the ATG base station performs beam forming on the terminal according to the horizontal angle width (beamwidth) and the vertical angle width (beamwidth). The range of the angle of the horizontal dimension shaped beam is [ HDOA-beam Width H/2, HDOA+beam Width H/2], and the range of the angle of the vertical dimension shaped beam is [ VDOA-beam Width V/2, VDOA+beam Width V/2].
In this embodiment, the interference parameters include an interference time slot bitmap between the first base station and the second base station, a connection angle between the first base station and the second base station, and the calculating the interference parameters between the first base station and the second base station includes:
s21, generating an interference time slot bitmap between the first base station and the second base station, and calculating a connection angle between the first base station and the second base station;
in one example, generating the interference slot bitmap between the first base station and the second base station includes: acquiring a first frame structure of a first base station, and inquiring a second frame structure of a second base station, wherein the first frame structure comprises a plurality of time slots, the second frame structure comprises a plurality of time slots, and the time slot length of the first frame structure is the same as the time slot length of the second frame structure; analyzing the first frame structure and the second frame structure, and judging whether the downlink time slot of the first frame structure is overlapped with the uplink time slot of the second frame structure; for each time slot position, if the downlink time slot of the first frame structure is overlapped with the uplink time slot of the second frame structure, configuring a first flag bit at the corresponding time slot position of the initial time slot bitmap, and if the downlink time slot of the first frame structure is not overlapped with the uplink time slot of the second frame structure, configuring a second flag bit at the corresponding time slot position of the initial time slot bitmap, so as to obtain an interference time slot bitmap between the first base station and the second base station.
In a communication network using time resources for communication, a time slot is a time slice in a time division multiplexing mode, and is a communication unit, and the time slot can be divided into a plurality of time codes according to a period, for example, the time slot of a 2.5ms dual-period base station is divided into 10 time codes (0-9), because the time slot length of a first frame structure is the same as that of a second frame structure, the time slots of the first base station and the second base station can be aligned, and further, for each time slot position (each time code on the time slot), the time slot position is determined to be a time slot for uplink communication or downlink communication, because the same time slot position of two base stations can only be used for uplink communication or downlink communication, otherwise, interference can be generated, for example, for the time code 1 of slot1, if the first base station uses the time code 1 for downlink communication, and at the same time slot time the second base station uses the time code 1 for uplink communication, and the second base station uses the time slot as the uplink time slot, so that interference can be caused by the occupation of the time slot.
Fig. 4 is a schematic diagram of determining an interference time slot in the embodiment of the present invention, where the first base station is an ATG base station, the second base station is a 2.5ms bi-periodic base station, and n-1 to n+2 slots are shown, each slot contains 0 to 9 total 10 time codes, where D represents a downlink time slot position, U represents an uplink time slot position, and when the downlink time slot of the ATG base station overlaps with the uplink time slot position of the public network base station, a flag bit of the time slot position in the interference time slot bitmap is 1, otherwise, is set to 0.
Knowing the frame structure of the ATG base station and the surrounding plurality of public network base stations, an ATG interference slot bitmap is first determined. Taking an NR TDD (New Radio Time Division Duplexing, new air-interface time division duplex) 2.5ms double-period base station as an illustration of a determination method of an interference time slot bitmap, an ATG base station inquires frame structures of surrounding N public network base stations through an Xn interface, and the interference time slot bitmap is calculated; when the downlink time slot of the ATG base station is on the public network base stationWhen the line time slots overlap, the time slot in the interference time slot Bitmap is set to 1, otherwise, the time slot is set to 0, so that a plurality of groups of interference time slot Bitmap can be obtained 1 、Bitmap 2 、Bitmap 3 ....Bitmap N And the like, wherein each group of interference time slot bitmaps corresponds to a public network base station which can possibly interfere.
In another example, calculating the link angle between the first base station and the second base station includes: acquiring first position information of a first base station and inquiring second position information of a second base station; and calculating a connection angle between the first base station and the second base station according to the first position information and the second position information, wherein the connection angle comprises a horizontal angle and a vertical angle.
Optionally, the ATG base station queries GNSS information of surrounding public network base stations through the Xn interface, calculates, according to the GNSS information of the ATG and the public network base stations, a connection angle between the ATG base station and the public network base station, including a horizontal angle H and a vertical angle V, and can calculate, for a case where N public network base stations exist around, a plurality of groups of angles (H 1 ,V 1 )、(H 2 ,V 2 )....(H N ,V N )。
FIG. 5 is a schematic diagram of calculating a horizontal angle between a first base station and a second base station according to an embodiment of the present invention, FIG. 6 is a schematic diagram of calculating a vertical angle between the first base station and the second base station according to an embodiment of the present invention, wherein A is a normal line of an antenna array surface of the first base station, is perpendicular to the antenna array surface, intersects the antenna array surface (such as a center point), B is a connection line from the antenna array surface of the first base station to the antenna array surface of the second base station, a is a projection of A on a water surface and ground, B is a projection of B on the water surface and ground, and the horizontal angle H is a minimum included angle between a and B, V 1 Is the included angle between A and the horizontal plane, V 2 B is an included angle with the horizontal plane, and the vertical angle V is V 1 And V is equal to 2 Difference between them.
S22, determining an interference time slot bitmap and a connection angle as interference parameters between the first base station and the second base station.
In one implementation manner of this embodiment, the interference parameter includes an interference time slot bitmap between the first base station and the second base station and a connection angle between the first base station and the second base station, and determining whether the first terminal is the target terminal according to the angle range of the shaped beam and the interference parameter includes: judging whether the connection angle is in the angle range of the shaped wave beam, and judging whether the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first flag bit, wherein the first flag bit is used for representing that the downlink time slot of the first base station is overlapped with the uplink time slot of the second base station; if the connection angle is within the angle range of the shaped wave beam and the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is the first zone bit, determining the first terminal as the target terminal.
In some examples, if the interference time slot bitmap is not generated in advance, the judgment may be directly performed, that is, whether the downlink time slot adopted when the first base station schedules the first terminal overlaps with the uplink time slot of the second base station, if so, the connection angle is within the angle range of the shaped beam, and the first terminal is determined to be the target terminal.
In another implementation manner of this embodiment, determining whether the first terminal is a target terminal includes: judging whether the position of the second base station is within the beam forming range of the first base station scheduling first terminal, judging whether the receiving antenna of the second base station is in a positive relation with the transmitting beam of the first base station, if the position of the second base station is within the beam forming range of the first base station scheduling first terminal, and if the receiving antenna of the second base station is in a positive relation with the transmitting beam of the first base station, determining whether the first terminal is a target terminal.
When the position of the public network base station is in the forming direction of the ATG base station wave beam, and the public network base station receiving antenna and the ATG base station transmitting wave beam form a positive relation, the public network base station can be subjected to strong interference of the ATG base station.
Wherein, judge whether the line angle is in the angle range of the beam of the shaping, include: judging whether the horizontal angle of the connecting line angle is in the range of a forming beam horizontal angle interval of the angle range of the forming beam, judging whether the vertical angle of the connecting line angle is in the range of a forming beam vertical angle interval of the angle range of the forming beam, only the horizontal direction and the vertical direction are in the angle range of the forming beam, and determining that the connecting line angle is in the angle range of the forming beam.
In one example, the second base station includes a plurality of public network base stations gNB, for a public network base station gNB i According to the calculated angle (H i ,V i ) And interference bitmap i If the condition (H) of the public network base station is satisfied i ,V i ) At the same time, the beam falls within the angle range of the shaped beam, thereby meeting the requirement of HDOA-beam WidthH/2 is less than or equal to H i HDOA+BeamWidthH/2 and VDOA-BeamWidthV/2 is less than or equal to V i When VDOA+beamWidthV/2 is not more than, and the interference bitmap of the public network base station is bitmap i Setting 1 in the corresponding downlink time slot, overlapping the time slots, and not scheduling the terminal in the downlink time slot; otherwise, the downlink time slot is normally scheduled.
Fig. 7 is a schematic diagram of a public network base station in an ATG base station beamforming range in an embodiment of the present invention, a second base station in a first base station beamforming range, and fig. 8 is a schematic diagram of a public network base station not in an ATG base station beamforming range in an embodiment of the present invention, the second base station being outside the first base station beamforming range.
Fig. 9 is a complete flowchart of interference suppression in an embodiment of the present invention, which is used to describe in detail a scheme of this embodiment in an implementation manner, where a first base station is an ATG base station, a first terminal is an ATG terminal, a second base station is a public network base station, the number of public network base stations is N, the ATG base station adopts a TDD system, and the DOA shaping is used in the next step. The ATG base station can schedule a plurality of ATG terminals at the same time, and for a certain ATG terminal, the detailed implementation flow of the interference suppression method comprises the following steps:
Step 101: determining an interference time slot Bitmap according to the frame structures of the ATG base station and the N public network base stations 1 、Bitmap 2 ......Bitmap N ；
Step 102: according to the GNSS information of the ATG base station and the surrounding N public network base stations, calculating the angles (H 1 ，V 1 )、(H 2 ，V 2 )......(H N ，V N )；
Step 103: the ATG base station calculates the HDOA and the VDOA of the terminal according to the GNSS position information reported by the terminal in real time;
step 104: calculating the angle range of the shaped beam when the ATG base station performs beam shaping on the terminal according to the horizontal angle width (beamwidth) and the vertical angle width (beamwidth) of the shaped beam of the ATG base station: the angle interval of the horizontal dimension shaping beam is [ HDOA-beamWidthH/2, HDOA+beamWidthH/2], and the angle interval of the vertical dimension shaping beam is [ VDOA-beamWidthV/2, VDOA+beamWidthV/2];
step 105: circularly traversing the stored N public network base station information;
step 106: gNB for a public network base station i When the base station (H i ，V i ) Fall in the horizontal dimension and vertical;
the dimension forming beam interval range meets the requirement that the HDOA-beamWidthH/2 is less than or equal to H i HDOA+BeamWidthH/2 and VDOA-BeamWidthV/2 is less than or equal to V i If VDOA+beamWidthV/2 is not more than, jumping to the step 107; otherwise, jump to step 108;
step 107: judging Bitmap of the public network base station i Setting 1 in the corresponding downlink time slot, the ATG base station does not schedule the terminal, and ending the flow; otherwise, jump to step 108;
Step 108: judging whether the last public network base station is the last, if so, normally scheduling the downlink time slot, and ending the flow; otherwise, the process jumps to step 105 and starts the next public network base station.
When the downlink of the ATG base station adopts DOA shaping, firstly, determining an uplink time slot interference bitmap of an ATG downlink time slot to the public network base station according to a public network base station and an ATG base station frame structure, and then calculating the connection angle of the ATG base station and the public network base station according to GNSS position information of the ATG base station and the public network base station, wherein the connection angle comprises a horizontal angle H and a vertical angle V; the ATG base station uses GNSS position information reported by the ATG terminal in real time in the flight process to calculate HDOA (Horizontal angle of DOA) and VDOA (Vertical angle of DOA) of the ATG terminal, and calculates the horizontal dimension interval range ([ H ] when the ATG base station performs beam forming on the terminal according to the horizontal angle width (beamWidthH) and the vertical angle width (beamWidthV) of the beam forming beam of the ATG base station 1 ,H 2 ]) And a vertical dimension interval range ([ V) 1 ,V 2 ]). When H and V of the public network base station fall in the horizontal dimension at the same timeInterval range ([ H ] 1 ,H 2 ]) And a vertical dimension interval range ([ V) 1 ,V 2 ]) When the downlink time slot of the ATG base station overlaps the uplink time slot of the public network base station, the downlink time slot is not scheduled; otherwise, the downlink time slot is normally scheduled.
The embodiment provides an interference suppression method of an ATG base station to a public network base station based on a DOA shaping angle interval. When the position of the public network base station is in the beam forming direction of the ATG base station and the receiving antenna of the public network base station and the transmitting beam of the ATG base station are in a positive relation, the public network base station can be subjected to strong interference of the ATG base station; because the shaped beam of the ATG base station is a narrow beam, the interference suffered by the public network base station cells of other position relations is much weaker. The downlink time slot scheduling of the ATG base station which causes strong interference to the public network base station can be limited according to the geographic position relation between the ATG base station and the public network base station and the beam forming range of the ATG base station. And the interference to the public network base station is reduced under the condition of affecting the air interface resource utilization rate of the ATG base station cell to the minimum extent.
By adopting the interference suppression method of the embodiment, the interference caused to the public network base station when the ATG base station schedules the ATG terminal is reduced to the maximum extent by adjusting the downlink scheduling strategy of the ATG base station over the range of the public network base station by utilizing the position relation between the ATG base station and the public network base station, the air interface resource loss rate of the ATG base station cell is effectively reduced, and the downlink flow loss of the ATG system is reduced to the maximum extent.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
Example 2
In this embodiment, an interference suppression device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and will not be described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 10 is a block diagram of an interference suppression device according to an embodiment of the present invention, as shown in fig. 10, the device includes:
a calculating module 100, configured to calculate an angle range of a beam formed by a first base station to a first terminal, and calculate an interference parameter between the first base station and a second base station;
a judging module 102, configured to judge whether the first terminal is a target terminal according to the angle range of the shaped beam and the interference parameter;
and the control module 104 is configured to prohibit, if the first terminal is a target terminal, the first base station from scheduling the first terminal.
Optionally, the computing module includes: an acquisition unit, configured to acquire terminal position information of a first terminal; a first calculating unit, configured to calculate a beam forming angle of the first base station for the first terminal using the terminal position information; and the second calculation unit is used for calculating the angle range of the beam of the first base station for the first terminal according to the angle of the beam.
Optionally, the shaped beam angle includes a horizontal angle of arrival HDOA and a vertical angle of arrival VDOA, and the second calculation unit includes: an obtaining subunit, configured to obtain a horizontal angle width beamwidth h and a vertical angle width beamwidth v of a beam formed by the first base station; a calculating subunit, configured to calculate an angle range of the shaped beam of the first base station for the first terminal by using the following formula: a beam angle interval range of horizontal dimension= [ HDOA-beamWidthH/2, hdoa+beamwidthh/2], a beam angle interval range of vertical dimension= [ VDOA-beamWidthV/2, vdoa+beamwidthv/2]; wherein the angular range of the shaped beam comprises a horizontal angular range and the vertical angular range of the shaped beam.
Optionally, the computing module includes: the processing unit is used for generating an interference time slot bitmap between the first base station and the second base station and calculating a connection angle between the first base station and the second base station; and the determining unit is used for determining the interference time slot bitmap and the connection line angle as interference parameters between the first base station and the second base station.
Optionally, the processing unit includes: an obtaining subunit, configured to obtain first location information of the first base station, and query second location information of the second base station; and the calculating subunit is used for calculating a connecting line angle between the first base station and the second base station according to the first position information and the second position information, wherein the connecting line angle comprises a horizontal angle and a vertical angle.
Optionally, the processing unit includes: a processing subunit, configured to obtain a first frame structure of the first base station, and query a second frame structure of the second base station, where the first frame structure includes a plurality of time slots, the second frame structure includes a plurality of time slots, and a time slot length of the first frame structure is the same as a time slot length of the second frame structure; a judging subunit, configured to parse the first frame structure and the second frame structure, and judge whether a downlink timeslot of the first frame structure and an uplink timeslot of the second frame structure overlap; a configuration subunit, configured to, for each time slot position, configure a first flag bit at a corresponding time slot position of an initial time slot bitmap if a downlink time slot of the first frame structure overlaps with an uplink time slot of the second frame structure, and configure a second flag bit at a corresponding time slot position of the initial time slot bitmap if the downlink time slot of the first frame structure does not overlap with the uplink time slot of the second frame structure, so as to obtain an interference time slot bitmap between the first base station and the second base station.
Optionally, the interference parameter includes an interference time slot bitmap between the first base station and the second base station and a connection angle between the first base station and the second base station, and the judging module includes: the judging unit is used for judging whether the connection angle is in the angle range of the shaped wave beam or not, and judging whether the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first flag bit or not, wherein the first flag bit is used for representing that the downlink time slot of the first base station is overlapped with the uplink time slot of the second base station; and the determining unit is used for determining that the first terminal is a target terminal if the connection angle is in the angle range of the shaped wave beam and the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first flag bit.
It should be noted that each of the above modules may be implemented by software or hardware, and for the latter, it may be implemented by, but not limited to: the modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.
Example 3
An embodiment of the invention also provides a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.
Alternatively, in the present embodiment, the above-described storage medium may be configured to store a computer program for performing the steps of:
s1, calculating an angle range of a first base station to a shaped wave beam of a first terminal, and calculating interference parameters between the first base station and a second base station;
s2, judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter;
and S3, if the first terminal is a target terminal, the first base station prohibits scheduling of the first terminal.
Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a usb disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing a computer program.
An embodiment of the invention also provides an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.
Alternatively, in the present embodiment, the above-described processor may be configured to execute the following steps by a computer program:
s1, calculating an angle range of a first base station to a shaped wave beam of a first terminal, and calculating interference parameters between the first base station and a second base station;
s2, judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter;
and S3, if the first terminal is a target terminal, the first base station prohibits scheduling of the first terminal.
Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A method of interference suppression, comprising:
calculating the angle range of a first base station to a shaped wave beam of a first terminal, and calculating interference parameters between the first base station and a second base station;
judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter;
and if the first terminal is the target terminal, the first base station prohibits scheduling of the first terminal.
2. The method of claim 1, wherein calculating the angular range of the first base station's shaped beam to the first terminal comprises:
acquiring terminal position information of a first terminal;
calculating a beam forming angle of the first base station for the first terminal by adopting the terminal position information;
and calculating the angle range of the beam of the first base station aiming at the first terminal according to the angle of the beam.
3. The method of claim 2, wherein the shaped beam angle comprises a horizontal angle of arrival, HDOA, and a vertical angle of arrival, VDOA, and wherein calculating the angular range of the shaped beam for the first terminal by the first base station from the shaped beam angle comprises:
acquiring a horizontal angle width beamwidth H and a vertical angle width beamwidth V of a shaped beam of the first base station;
the angular range of the shaped beam of the first base station for the first terminal is calculated by adopting the following formula:
a beam angle interval range of horizontal dimension= [ HDOA-beamWidthH/2, hdoa+beamwidthh/2], a beam angle interval range of vertical dimension= [ VDOA-beamWidthV/2, vdoa+beamwidthv/2]; wherein the angular range of the shaped beam comprises a horizontal angular range and a vertical angular range of the shaped beam.
4. The method of claim 1, wherein calculating an interference parameter between the first base station and the second base station comprises:
generating an interference time slot bitmap between the first base station and the second base station, and calculating a connection angle between the first base station and the second base station;
and determining the interference time slot bitmap and the connection line angle as interference parameters between the first base station and the second base station.
5. The method of claim 4, wherein calculating a connection angle between the first base station and the second base station comprises:
acquiring first position information of the first base station and inquiring second position information of the second base station;
and calculating a connection angle between the first base station and the second base station according to the first position information and the second position information, wherein the connection angle comprises a horizontal angle and a vertical angle.
6. The method of claim 4, wherein generating the interference slot bitmap between the first base station and the second base station comprises:
acquiring a first frame structure of the first base station, and inquiring a second frame structure of the second base station, wherein the first frame structure comprises a plurality of time slots, the second frame structure comprises a plurality of time slots, and the time slot length of the first frame structure is the same as the time slot length of the second frame structure;
analyzing the first frame structure and the second frame structure, and judging whether the downlink time slot of the first frame structure is overlapped with the uplink time slot of the second frame structure;
and if the downlink time slot of the first frame structure is not overlapped with the uplink time slot of the second frame structure, configuring a second flag bit at the corresponding time slot position of the initial time slot bitmap to obtain an interference time slot bitmap between the first base station and the second base station.
7. The method of claim 1, wherein the interference parameters include an interference time slot bitmap between the first base station and the second base station and a connection angle between the first base station and the second base station, and determining whether the first terminal is a target terminal according to the angle range of the shaped beam and the interference parameters comprises:
judging whether the connection angle is in the angle range of the shaped wave beam or not, and judging whether the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first zone bit, wherein the first zone bit is used for representing that the downlink time slot of the first base station is overlapped with the uplink time slot of the second base station;
and if the connection angle is within the angle range of the shaped wave beam and the downlink time slot of the first base station corresponding to the first terminal in the interference time slot bitmap is a first zone bit, determining that the first terminal is a target terminal.
8. An interference suppression device, comprising:
the computing module is used for computing the angle range of the first base station to the shaped wave beam of the first terminal and computing the interference parameter between the first base station and the second base station;
The judging module is used for judging whether the first terminal is a target terminal or not according to the angle range of the shaped wave beam and the interference parameter;
and the control module is used for prohibiting the first base station from scheduling the first terminal if the first terminal is a target terminal.
9. A storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method of any of claims 1 to 7 when run.
10. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to run the computer program to perform the method of any of the claims 1 to 7.
CN202210657159.5A 2022-06-10 2022-06-10 Interference suppression method and device, storage medium and electronic device Pending CN117279112A (en)

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